UG-90(c)(1)(-l), UG-46 1

[JamesKerr]

Hello I'm looking for opinions in regards to the following question,

May visual examinations to satisfy UG-90(C)(1)(-l) be made after final closure, using the inspection openings in UG-46?

Here are two thoughts for consideration;
- That the openings reference in UG-46 are only for in-service inspections to verify corrosion and erosion and that they have no place in fabrication.
- UG-97(a), Conditions do permit a "more" complete inspection earlier in fabrication, however the argument is that if we continue with fabrication it will no long be permit entry, but the inspection openings are
still available for the Inspector.


Thank-you

 

[r6155]

Can you tell us how to make a radiographic test in circumf. weld of head 48" diam.(closing weld) without an access opening?, and how to make a repair?.

Regards

 

[JamesKerr]

When doing RT we used to insert the source through a 1.25" cplg or shoot using double wall technique. We now do PAUT so this isn't a issue.
If there is a repair we gouge out the weld until we get to the backing material. Then we fill it back up.

 

[r6155]

@ JamesKerr
Is the extension of your examination according to UW-52?
My Client use pressure vessel for hygienic service,non corrosive, S.Steel,and internal surface is polished. Impossible this PV without access opening.

Regards

 

[JamesKerr]

We apply UW-52 and UW-53(b).